Canon imagePROGRAF iPF750 MFP M40 - Manual (Page 802)

Problems with the printing quality
Printing is faint ................................................................................................................................................. 786
Paper rubs against the Printhead ................................................................................................................... 787
The edges of the paper are dirty .................................................................................................................... 788
The surface of the paper is dirty ..................................................................................................................... 788
The back side of the paper is dirty ................................................................................................................. 789
Printed colors are inaccurate .......................................................................................................................... 789
Banding in different colors occurs .................................................................................................................. 790
Colors in printed images are uneven .............................................................................................................. 790
Image edges are blurred or white banding occurs ........................................................................................ 791
The contrast becomes uneven during printing ............................................................................................... 792
The length of printed images is inaccurate in the feeding direction .............................................................. 792
Images are printed crooked ........................................................................................................................... 792
Documents are printed in monochrome ......................................................................................................... 793
Line thickness is not uniform ........................................................................................................................... 793
Lines are misaligned ....................................................................................................................................... 793
Problems with the printing quality caused by the type of paper .................................................................... 794
Printing is faint
Cause Corrective Action
You may be printing on the wrong
side of the paper. Print on the printing surface.
The Printhead nozzles are clogged. Print a test pattern to check the nozzles and see if they are clogged.
(See "Checking for Nozzle Clogging.")
→P.739
Because the printer was left without
ink tanks installed for some time,
ink has become clogged in the ink
supply system. After the ink tanks have been installed for 24 hours, run Head Cleaning B from
the Control Panel.
(See "Cleaning the Printhead.")
→P.740
Paper is jammed inside the Top
Cover. Follow the steps below to remove the jammed piece of paper inside the Top
Cover.
1. Open the Top Cover and make sure the Carriage is not over the Platen.
2. Remove any scraps of paper inside the Top Cover.
(See "Clearing Jammed Roll Paper.")
→P.773
(See "Clearing a Jammed Sheet.") →P.777
3. Close the Top Cover.
The ink was not dry when paper
was cut. Specify a longer drying period in the Control Panel menu, in Paper Details >
Roll DryingTime.
(See "Menu Settings.")
→P.673
Printing may be faint if Print
Quality in Advanced Settings in
the printer driver is set to Standard
or Draft. In Advanced Settings of the printer driver, choose Highest or High in Print
Quality.
Printing in Draft or Standard mode is faster and consumes less ink than in
Highest or High modes, but the printing quality is lower.
(See "Giving Priority to Particular Graphic Elements and Colors for Print-
ing.")
→P.60
Troubleshooting > Problems with the printing quality >
Printing is faint iPF750
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786